- 學位論文
數位學習格網之社群安全機制
The Community Security Mechanism of an e-Learning Grid
摘要
隨著數位學習的快速興起，在不同數位學習社群間的資源共享，為數位學習教材的重要來源，但是社群的認證機制在數位學習的過程中往住被忽略，導致未經授權的學習者能夠輕易得到學習教材。這是因為一般的社群架構都是建構在數位學習系統上，在安全認證時只能進行單一認證，因為此一認證機制通常是在設計數位學習系統時，直接採用密碼認證的方式進行權限的控管或是保護數位教材的安全性，因而產生授權認證的問題，目前並沒有一套很完善的方案來處理這方面的問題。 本研究主要的目的就是在數位學習格網上，針對社群安全部份，加上一個衍生的安全機制，經由這種安全機制，可以讓數位學習格網的社群得以經由身份認證之後，取用其他同屬在一個聯盟?堛爾篞蔭氶A不必重覆認證，進而達到簡化驗證程序。 在文獻探討方面，主要運用格網技術與PGP加密機制的相關技術，透過GT4 (Globus toolkit 4.0.3) 的基本架構，提出以格網聯盟通關法之快速通關的認證方式來建立數位學習格網之社群安全機制，並有效管理分散之數位學習教材的讀取權限。 系統設計方面，計劃使用Web Service的入口網站及PGP的信任機制，將三台不同的社群，藉由衍生出來的認證機制－格網聯盟通關法，讓學習者持有合法憑證，經過驗證後就可以取用在社群?堜珒ㄗ悛爾篞翩A進而使數位學習格網的社群安全性得到保障。
並列摘要
With the rapid growth of e-Learning, its teaching materials mainly comes from resource sharing among different e-Learning communities. However, the examinations of community are usually ignored during e-Learning, further causing unauthorized learners easily acquire teaching materials. This is because the general communities which are constructed upon e-Learning system can only perform singular examination, namely the management of authority or security of e-Learning teaching materials is operated through code examination directly. Therefore, the above-mentioned conditions result in authentication and examination problems, which still lack an ideal solution. Focusing on community security dimension on e-Learning Grid, this study applies an additional derivative security mechanisms to make communities inside the e-Learning Grid can take resources inside the same alliance without repeated examinations, further simplifying the certification procedure. In the literature review, according to related technologies of Grid technology, PGP encryption mechanisms, and basic frame of GT4 (Globus toolkit 4.0.3), this study not only proposed a rapid examination method based on Grid Alliance-PASS to establish security mechanisms of e-Learning Grid, but also manages the access right of distributed e-Learning teaching materials effectively. As for system design, this study aims to integrate portal site of Web Service and trust mechanism of PGP, and utilizes derivative examination mechanisms- Grid Alliance-PASS to make learners with legal certificate acquire all information among 3 different communities and safeguard communities in e-Learning Grid.